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    Yahoo Privacy Policy > Yahoo Privacy Policy > Appended and Matched Data

    Yahoo Privacy

    To find out how Yahoo treats your personal information, please visit our Privacy Policy. This page describes current Yahoo practices with respect to this product. Information on this page may change as Yahoo! adds or removes features.


    By bringing content and advertising to you that is relevant and tailored to your interests, Yahoo provides a more compelling online experience. Learn More about relevant advertising. Manage your interest-based categories, or opt-out of all categories, from the Yahoo! Ad Interest Manager.

    Web browser Do Not Track settings are no longer enabled on Yahoo.  Users receive a personalized experience by default.  Manage settings here.

    Parents of Children Under 13

    Please read the Children’s Privacy and Family Accounts Privacy Module for more information about our privacy practices for children under 13.

    Appended and Matched Data

    Yahoo! collects information, including personally identifiable information, as described in our Privacy Policy, such as when you register with Yahoo!, use Yahoo! products or services, visit Yahoo! pages or the pages of certain Yahoo! partners, or enter promotions or sweepstakes. Yahoo! may combine information, including personally identifiable information, that we have about you with information we obtain from our trusted partners. Yahoo! may use the information provided by these partners in combination with our existing information to offer you more relevant content and advertising.

    Information Collection Practices

    • Yahoo! may obtain information from our trusted partners and append it to our existing information to add more detail to the information we have about our users. We may use appended information to provide more relevant content and advertising. Yahoo! may obtain information from, or work with, the following trusted partners to provide more relevant content and advertising:
    • Yahoo! may append information about you that is publicly available or information that is aggregated and/or anonymized by trusted partners. This information may include, for example, average household size or postal code. Yahoo! may also append other demographic information about you such as household income range and general location. This information may be associated with personally identifiable information such as email address, name and physical address.

    Information Matched for Advertisers

    • In some cases our advertisers may share information (including personally identifying information) with Yahoo! for use in identifying and delivering ads to their customers. Yahoo! uses this information only on behalf of the advertiser who provided it. Yahoo! may match this information to our existing user information or may use a third party vendor to assist in this process. The third party vendor may not use the advertiser or Yahoo! information for any independent purpose.

    Your Ability to Opt Out of Interest-based Advertising

    • Yahoo! offers you the choice to opt out of receiving interest-based content and advertising. If you opt out, your information will not be appended to or matched with third parties' information about you for the purposes described above, and you will no longer receive interest-based content or advertising. Additionally, if you opt out, information about your visits to our advertising partner websites will not be used to provide reporting to partners using Yahoo!’s analytics product.

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